diff options
Diffstat (limited to 'arch/sh/kernel/cpu/sh4/probe.c')
| -rw-r--r-- | arch/sh/kernel/cpu/sh4/probe.c | 33 |
1 files changed, 22 insertions, 11 deletions
diff --git a/arch/sh/kernel/cpu/sh4/probe.c b/arch/sh/kernel/cpu/sh4/probe.c index 9e89984c4f1..ebceb0dadff 100644 --- a/arch/sh/kernel/cpu/sh4/probe.c +++ b/arch/sh/kernel/cpu/sh4/probe.c @@ -53,7 +53,7 @@ int __init detect_cpu_and_cache_system(void) /* * Setup some generic flags we can probe on SH-4A parts */ - if (((pvr >> 16) & 0xff) == 0x10) { + if (((pvr >> 24) & 0xff) == 0x10) { if ((cvr & 0x10000000) == 0) boot_cpu_data.flags |= CPU_HAS_DSP; @@ -126,17 +126,22 @@ int __init detect_cpu_and_cache_system(void) CPU_HAS_LLSC; break; case 0x3008: - if (prr == 0xa0 || prr == 0xa1) { - boot_cpu_data.type = CPU_SH7722; - boot_cpu_data.icache.ways = 4; - boot_cpu_data.dcache.ways = 4; - boot_cpu_data.flags |= CPU_HAS_LLSC; - } - else if (prr == 0x70) { + boot_cpu_data.icache.ways = 4; + boot_cpu_data.dcache.ways = 4; + boot_cpu_data.flags |= CPU_HAS_LLSC; + + switch (prr) { + case 0x50: + boot_cpu_data.type = CPU_SH7723; + boot_cpu_data.flags |= CPU_HAS_FPU | CPU_HAS_L2_CACHE; + break; + case 0x70: boot_cpu_data.type = CPU_SH7366; - boot_cpu_data.icache.ways = 4; - boot_cpu_data.dcache.ways = 4; - boot_cpu_data.flags |= CPU_HAS_LLSC; + break; + case 0xa0: + case 0xa1: + boot_cpu_data.type = CPU_SH7722; + break; } break; case 0x4000: /* 1st cut */ @@ -215,6 +220,12 @@ int __init detect_cpu_and_cache_system(void) * SH-4A's have an optional PIPT L2. */ if (boot_cpu_data.flags & CPU_HAS_L2_CACHE) { + /* Bug if we can't decode the L2 info */ + BUG_ON(!(cvr & 0xf)); + + /* Silicon and specifications have clearly never met.. */ + cvr ^= 0xf; + /* * Size calculation is much more sensible * than it is for the L1. |